The 55th Annual GRAMMY Awards: Red Carpet ArrivalsUS-MUSIC-GRAMMY AWARDS-ARRIVALSNominees for Album of the Year, Best Rock Performance, Best Rock Song and Best Americana Album Mumford & Sons arrive on the red carpet at the Staples Center for the 55th Grammy Awards in Los Angeles, California, February 10, 2013. (credit: Frederic J. Brown/AFP/Getty Images)

The 55th Annual GRAMMY Awards: Red Carpet ArrivalsUS-MUSIC-GRAMMY AWARDS-ARRIVALSNominee for Best R&B Song and Best R&B Album Tamia arrives at the Staples Center for the 55th Grammy Awards in Los Angeles, California, February 10, 2013. (credit: Frederic J. Brown/AFP/Getty Images)